Machine for inserting fastenings.



L. A. OASGRAIN. MACHINE FOR INSERTING FASTENINGS.

APPLIOATION FILED DEC. 1, 1911.

Patented Nov. 3,1914.

2 SHEETS-SHEET 2.

TH NORRIS PETERS 60.. PHOTO'LITH 1, WASHINGTON, D. c.

i UN TED warns.

PAT N oFFIoEQ LOUIS A. .oAseRAIN, orBnvEnLY, iyrassAonnsnrrms, ASSIGNQR T0 UNITED snon MACHINERY'COMPANY, or rarnnson, NEW JERsEY, A CORPORATION OF'NEW JERSEYZ.

To all whom i't mag i concern 1 Be it known that I, LOUIS A. CAseaAIN, a a citizen, of the United States, residing at Beverly, in the county of Essex and State ofMassachusetts, have invented certam-Improvements in Machines for Inserting Fast enings, of which the followlngdescrlptlon,

in connection withtheaccompanying drawings, 1s aspeclficatlon, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for inserting fasteningsand is particularly'useful when embodied in a fastening inserting measured length. Excepting those novel fea-;

tures which constitute the present invention,

the illustrated machine is substantially like that disclosed in United States Letters Pa tent No. 1,053,479, granted Feb. 18, 1913, to L. A. Casgrain, for improvements'in machines for inserting fastenings, To the said patent reference may be had for a complete description of the parts of said machine herein shown. j

As more fully set forth in the aforementioned Letters Patent, the fastening inserting mechanism ofthe machine herein shown comprises a pair of normally reciproeating cutters which, when the machine is operating to insert fastenings,'grip an interposed. fastening strip, insert the' end of the strip into the work, and, then sever the strip at the pointwhere it has been gripped.

The end of the strip which is to be inserted into the work obviously extends below the cutters and unless provision is made to guide 1t 1t may fall to enter the work at the desired point, and when the machine.

is provided with an awl which makes an awl hole to receive the fastening it may either fail to enter thelawl hole at allor strip at the desired point. If, however, one

- of the cutters is sharper than the-other so that when they are moved toward each other to grip the fastening'strip, the strip ismoved Specification of Letters Patent. I

carelessness the cutters I usted thattheire'dges are not directly op of'the stripto tip t loreover, the original MACHINE non insnn'rrrre 'FASTENIHGSi Patented'Nov, 1914.

Applicationfiledillleeeinher1,1911. seriainaeeaese g to one side ofa point midway between the cutters, owing to the fact that one of them cuts into the strip more easily than the other-one does, a"tendency is 7 given to the projecting end of thestrip to tip out of the line in which it should move during the inserting operation. Again,

if through posed or if the bearingshave become worn so that onetends to lag behind the other, a

tendency is also given to'the projecting end out of the line of drive.

curvature ofthe. strip Jj due to coiling, usually persists to "some: extent and gives the end of the strip "a'te nd' ency to deviate from the line of drive. Owing to the foregoing other continhave been so ad gencies which aifectthequality, of'the work" i by causing a tendency in the projectingend of the strip to move outof the proper line or drive, the machine as hitherto constructed has required; especial attention upon the part'of theoperator to keep it in achustment and has required especial nicety of adjustment to produce the best work. An important object ofthe present invention,;therefore,is to improve themachine in the foregoing respects by making it less sensitive to slight variations in the positions or conditions ofthe cutters and to .de:

viations of -the,ifastening strip owing to the persistence jofits original curvature.

A particular ob]ect-of theinventionis to provide guidingineans which will operatev to engage theend of the strip to beinserted and tion. v H a Another'object of the inventioniis toprovilde improved means for controlling the guide, it during the inserting operas.

movements of the; utters which will insure 1 uniform 'actiOILHOf :tlie cutte'r's at the criticalpoint-sin their sequence of operationspeven.

though thebearings of the cutters and the connections between the cutters and their actuatn'ig 11163115:lJBCORIOJIlOlfG or less worn.

in the accompanying drawing,-'-Figure 1 is a frontelevation of the upper portion of a. machine embodying th'isink vention-in its preferred forn1;. Fig. 2 is a perspective detail, partly 4 in section, illu tratin'g the fastening inserting mechanism with the parts in thepositions which they.

assume just before; the; fastening (strip is. 4

gripped the jcutters;,-' 3is1a, perspec tive view similar to Fig. 2, showing the parts in the positions which they assume ust after the fastening strip has been gripped. by the cutters; Fig. f is a perspective view similar to Figs. 2 and 3 showing the positions of the parts at the time the fastening is being severed. from the strip by the cutters; Fig. 5 is a transverse section on the line 5-5 of Fig. 4;; Fig. 6 is a detail plan showing the manner in which the strip is engaged by the guiding means, and Fig. 7 is a perspective detail of one of the cutters.

As above suggested, the machine in which the" invention is shown as embodied is substantially that disclosed in said Letters Patout above identified, and comprises .a stand ard 10 which supports a head 12 in which the principal operative parts of the machine are carried. The main driving shaft 14 is normally connected with a source of power when the machine is in use, and the interruption of the insertion of fastenings.

is effected without stopping said shaft by moving the fastening strlp out of operative [relation to the cutters by which it is gripped,

inserted and severed/ These cutters, which are indicated at 46 and 48 in Fig. 1, are mounted in carriers 42 and 44 which are pivoted at their outer ends at 50 and 52 to oppositely extending arms of a T-shaped reciprocating head L0 arranged to reciprocate in a swinging frame 24: which swings about the axis of the shaft 14:.

"lhe fork members 72 and 7 of a forked slide 66 are pivotally connected at 76 and 78 to the respective cutter carriers 42 and n. The slide 66 has connections with a cam upon the rear face of the cam disk 34:,

said cam being not herein shown but being fully described in the Letters Patent above referred to. T he timing of this cam is so related to the reciprocating movement of he head 4&0 that at each rotation of the main shaft the slide 68 is caused first to move relatively to the'cutter carrierhead 40 at the beginning of the downward movement of the head'to cause thecutters to move simultaneously toward a. line through their pivots and thus to close upon and grip an interposed strip of fastening material, then to move with the head whereby it holds the cutters positively from movement in either direction relatively to the head while they are being carried downward to force the end of the strip into the work, and then to move relatively to the head to cause the cutters to sever thestrip after t 1e end has been ins rtedto the desired extent, and finally to move relatively to the head, as the head again rises, to cause the'cutters to separate to permit them to pass freely over the strip in their 1 upward movement.

The frame 24- is swung laterally to effect the work feeding operation through connections with a camjgroove 32 in the cam disk upon the machine head and carrying at its upper end a cam roll which enters the cam groove 32, and a link 36 pivotally connected at one end to the-frame 24 and pivotally connected at its other end to a clamp 38 upon the curved lower arm of the lever 26, all as more fully described in the Letters Patent above referred to. The feeding of the work the Letters Patent,'by means of an awl, the work feed being assisted, however, by a feeding and guiding plate which engages the projecting end of a partially inserted fastening. After the last fasten ing has been partially inserted and the awI has ben moved out of operative relation to the cutters, as more fully described in the LettersPatent, the feeding of the work into positionto bring the partially inserted fastening-beneath the feeding and guiding plate is effected entirely by the action of said plate. It willthus be seen that, although for the most ofthe successive operations of the machine the feeding function of the feeding and guiding plate is not essential to the successful operation of the machine, since the principal burden of the feeding operation is placed upon the awl, it is important that this function be retained in order to insure the completion of the insertion of the last fastening of a series.

The fastening strip, as in the machine of the Letters Patent, passes through a rethe cutters is controlled and through a pre senter 117 by which its horizontal relation to the cutters is controlled, the presenter 117 being provided with a series of guiding grooves, as in the machine of the Letters Patent, so that a plurality of strips may be kept in readiness to be presented; to the inserting mechanism. 7

The feeding and guiding plate is indicated at 4:12, but it will be noted that its structure is somewhat different from that of the correspondingly numbered element of the machine of the Letters Patent, this modification of the structure of this element constituting one of the principal features of the present invention. In the machine as hitherto constructed, the feed plate 41:12- has been provided with an opening which surrounded the end of the fastening strip, but it has not been practicable to make this opening of such a size that its sides would engage the sides of the strip and serve as effective guiding means therefor. This has been partly due to the fact that the opening in the feed plate 4:12flcontains the projecting end of the partially inserted fastening at the time the work is being fed, and in order to permit the feeding of the work along a curved path the opening must be large enough to permit some movement of 34, comprising a lever 26, pivoted at 28 is effected principally, as in the machine of tainer 80 by which its vertical relationto the fastening transverse to the path of movementof the feed plate. The necessity for enlarging the opening to permit such lateral movement is accentuated when the feeding of the work is effected by a two" point engagement ofqthe'inachine with the work, as when the work is being fed both by the engagement of the feed, plate with a projecting slug and the engagement of the avvl 162 with the Work. v

To provide effective means for guiding the fastening during the inserting operation and at the same time to retain so much of the feeding function of the feed plate as ,is-necessaryto complete the operation of the machine, is one of the principalobjects of the present invention; To this end the construction of the feed plate has been so modified that it constitutes an element of a new strip guiding means arranged to guide the portion of the strip which is below the point'at' which the strip isgripiped by the cutters, Cooperating with this modified feed plate is another element which moves into and out of engagement with the strip and serves, therefore, to force the strip tightly into the guiding groove in the feed plate and to maintain it in said groove durcomprises a strip engaging member or dog- 452 provided, in the illustrated construction, with a' V-shaped notch 454 which is adapted to embrace two sides of the strip herein shown, said strip being diamondshaped in section. The other two sides of the strip'are received in a corresponding V- shap'ed notch 455 in the feed plate 412. The strip engaging member 452 is so shaped in that portion which contains-the notch 454' that it will enter partway into the V in the plate 412, see particularly Fig. 6*ofthe drawings. The member 452 is slidingly mounted in a pivoted'controlling device 456 by which its movements toward and from y the fastening strip are controlled, the memher, 452 being provided with a stem 458 which is received in a substantially vertical bore in the controlling device 456. The con trolling device 4561sp1voted to swing in the recess 450 in the plate 45). by means of a.

pivot pin 460 which passes through the controlling device 456 and also cuts across the bore in which the stem 458 is received,this' stein being recessed, as shown at 462,jto pro--,

vide for vertical movement relative to the controlling device, the amount of, vertical movement beinglimited by the engagement of the ends of the recess 462 with the pivot pin'460. The controlling device 456 is nor- J mally pressed toWardthe cutters andtoward the fasteningstrip a spring 464 received in a socket in the front wall of the recess 450, said 'springhavingan end 466 which is received in a transverse slot 468 in the pivot pin 460whereby it keepsthe pivot pin from sliding out of its bearings. i The controlling device-456is forked at its lower end and each of the fork members is adapted to co operate with the adjacent cutter in controlling the timing of the operation of'thestrip engaging member; 452;" To this end each fork member is provided at itsend With-a stop 470 which engages the flange 472 upon the adjacent cutter, as thecutters are separated after a fastening inserting operation to permit them to "pass freely over the'wire duringtheir upward movement, this stop being so proportioned and so lo'cated that it will remain in engagement with the flange 472 until the cutters start to close upon the strip to gripit for the succeeding fastening ment of the cutters; as more fullyset forth in the Letters Patent above referred to, coninserting operation. 'Thisclosing move-f sists 'inoan upward movement of, the; outterstov'vard aline through their :pivots. The "upward movement of each cutter therefore lifts its flange 472 abovethe associated stop 470 and the controlling device 456,- is'thus permitted to move toward the cutters under theaction of the spring464. This movemerit of thecontrolling device toward the, cutters causes the strip engaging'member 452 to move toward the strip and thuscauses the V-shaped notch 454 to embrace the sides of the strip and to force the strip intothe V- shaped notch 455 in the plate The strip engaging member 452 will at this time be in its'lowermost positionfin the controlling device 456, the stem 458 being adapted to slide "freely up and down in the bore in the :controlling device, and-consequently said member will engage thestrip at a point comparatively near thefend of the strip. If,

owing to the speed of the machine, the strip engaging member should not drop to its lowermost position in the controlling device underthe action of gravity, it will be forced to that position by the engagement of itsupper end with the lower edgeof the swingingframe 2421s the reciprocating head 40 reaches the upper limit ofits'movement.

After f the strip engagingflmember 452 has" engaged the strip,-saidI member, together with the feed plate 412, moves downward with the 1 cuttersv and withthe reciprocating head40'until 'said'member engages a ledge 4 74 uponithe guard plate or foot plate 351.: i

The "downward movement of the feed" plate is stopped by its engagement with the work.v

After the strip engaginginember has en- 3 gaged the ledge 474, the strip will move past said member. during the continued insertion of the fastening, and the said member will maintain its: engagement with that portion of the strip. which is to; form a fastening until the said portion is nearly inserted at which time the beveled face 476.

upon each cutter will enga e the adjacent correspondingly beveled contact surface 47 8 formed upon the member 452, there being one oii these surfaces for each cutter, and the membenwill be forced away from the strip to permit the cutters. to force. the part which is to form the fastening down flush with the upper surface of the feed plate 412, as

As hereinabove suggested, it is important,

. in a machine of this type, that the cutting edges of the cutters be exactly opposed at the time the fastening strip is gripped and also -i throughout the inserting movement. To

this end each machine is supplied with means, not herein shown, for insuring an exact centering of the cutters when they are adjusted, It -may happen, however, that with long usage some of the bearings associated with the cutters may become worn, so that there is a slight backlash in the movem'ents of one or both. of'the cutters. It will be apparent that if there is any backlash in .i either or both of the cutters it may happen that the opening orthe closing movements may not occur simultaneously, and that one may lag behind the other so that at-the time the strip gripped the cutting. edges will not be exactly opposed. To avoid any possibility of such action of the cutters, the illustrated machine is shown as provided with means for insuring a simultaneous closing movement thereof so .that the edges .will be exactly opposed at the time the closingmovement occurs. The illustrated means comprlses a friction plug 482, mounted 111 a recess in the front plate 451, said the adjacent cutter carrier by a spring disk 484. Opposed to the friction plug 482 is a hardened steel plug 486 to prevent wear of the opposite side of the head 40 by reason of the pressure of the plug 482 upon the cutter carrier. There is one of these plugs 482 for eac i cutter carrier and theaction of the plugs is to retard the closing movement of the cutter carrier so that all backlash in the connections will be taken up before either cutter is brought into engagement with the strips, and the cutterswill therefore be in their proper adjusted relation' with. their edges exactlyopposed at the time the strip is gripped.

The operation of the machine with the Va plug being pressed into engagement with.

1 mason rious improvements embodied therein in accordance with the present invention will be clear, it is believed, from the foregoing. de. .scription, but in order to set forth the 1mproved' operation in more precise form. the various. steps in the insertion of a single fastening will be briefly recapitulated: The machine being rendered operative to insert fastenings in the manner set forth in the Letters Patent, during the first downward movement of the cutters the awl 162 will be forced into the work by the. engagement of one of the cutters therewith in the manner more fully set forth in said Letters Patent.

The frame 24 will then swing toward the left in Fig.- 1 to feed the work to bring the awl hole beneath the point at which the fasten-ingis inserted, and as the head returns to its initial position the notch 455 in. the

feed plate. 412 will be brought directly over said and hole. the frame is swung toward the le-ftthe head 40 starts to move upward and duringthe first part of its upward movement there. is a relative movement of the slide 66 and the headf40, and the cutters are-moved to open position so that they will pass freely over the strip W upon the continued upward movement of the head. During that part of the upward movement of the head which immediately succeeds the feeding of the work the feed plate 412 is also lifted high enough to bring itout of engagement with the previously partially inserted? fastening, so that it will pass this fastening upon the return of the frame 24 to its initial. position. The upward movement of the head? also carries-up with it the controllingdevice 456, the strip engaging member 452' moving: relatively to said device during its upward movement until the upper end of the recess 462 engages .the pivot pin 460. There will be a: slight upward movement of the strip engaging member 452 with the controlling device 456 after the relative movement of these parts has. taken place, so that said member will be a. slight distance above the foot plate or guard plate 351 at the time when the cutters are actuated to grip the strip. In Fig. 2 thereciprocating head 40 is shown at its upper limit of movement at which time the upper end of the stem 458 of the strip engaging member 452 abut-s against the under side of the front plate of the swinging frame 24, this relationship of these partsbei-ng provided to insure the movement of the strip engaging memberto its lowermost position in the controlling device 456.

other into engagement with the opposite sides of the stripVV. As this movement of the cutters takes place, the flanges 1472 upon said cutters move out of engagement with,

the stops 470 upon the controlling device 456, and said device is moved by its spring; 464 toward the cutters, thus bringing the strip engaging member 452 lnto engagement with the strip, whereby the strip is confined between the V-shaped notch 454 in the member 452 and the V-sh'aped notch 4:55 in the feed plate 412, as shown inFigs. 3 and 6. As the cutters continue their downward movement, the strip engaging member 452 engages the ledge 4741 13011 the foot plate or guard plate 351 and the strip then moves.

past said member during the continued inserting operation, said member being forced away from the strip and out of the path of the cutters by the engagement of the beveled sides 476 of a the cutters with the beveled contact surfaces 47 8 upon said member, as the cutters complete their inserting-movement and sever thefastening from the strip. The stops 470 are again brought into retaining relation'to the flanges 472; during the first part of the upward movement of the head 40 when the controlling device, moves up with the head while a relative movement of the cutters to the head takes place, the cutters being held against upward movement to cause them to openin the manner hereinabove set forth. i

It will be seenfrom the foregoing description that the strip is controlled and guided in a substantially positive manner from the time it is gripped until the inserting operation is substantially completed, and that this operation, serves to insure the centering of the strip in the guiding opening in the feed'plate 412, which opening is necessarily over the awl hole in the worln There is thus no opportunity for the strip to strike the work outside the awl hole or to enter the, awl hole at an inclination thereto. When the insertion of fastenings is to be stopped, the awl is moved out of operative relation: to the cutters, afterit has brought the awl hole into operative position beneath the opening 455 in the feed plate 412. It will be apparent,.however, that to complete the insertion.

of fastenings the work must be fed again to bring the partially inserted fastening be neath the solid portion of the plate 412. To this end the notch 455 in the feed plate 412 is made deep enough to insure the feeding of the work at this time. a It will be observed, that the notch 455 opens toward the front of the machine and that, therefore, it offers no resistance to the turning of the work in feeding about a curve, this construction being especially useful when the machine is used for sluggingvheels. It'will be noted also that the shapes of-"thenotches and 4:55 is'so relatedto the ,direction of the relative movement of the member 452 and the plate 412 that the strip guiding I meansexerts a stripcentering action along two-dimensions, v a I p y H 1th fastening strips of other cross sections, notches of othershapes may obviously be provided, although it that the V-shaped notches herein shownwill be useful'also withstrips having difierent cross sections, as, for example, strips of circular ,cross sect1on.-

Having; described 'my invention, what I will be apparent claim as newand: desire-to secure by Letters Patent oftheUnit-ed States is l 1. In *axmach ine' of the class described, means for grippmg. a fastening strip and inserting the end thereof intoiwork, and means for guiding theend of the stripiduring the inserting operationcomprising two members relatively movable into operative. guiding relation to said strip, one of 'saidmembers being provided with a strip guiding open ing constantly in alinement with said strip.

2. In almzichineofthe class described,

means for gripping a fasteningstrip and inserti: 1gv the end thereof into work, means for guidlng the end ofthestripduring the inserting operation comprismg a member having a guiding opening constantly in ahnement with said strip, and intermittently operated means for pressing thestrip into engagement with the walls of said'op'ening. 3. .In a machine of the class described,

means for gripping a fastening strip and inserting the end :thereof into work, means for guidingt'he end of the strip during-the inserting operation comprising a member having a guidmg openmg constantly in alinement with said strip and constructed to engage said strip at a plurality ofpoints about its periphery, and means for, tempo-v rarily pressing said strip into engagement with the walls of said opening atieach insertingoperation. v

4. In a machine of the'class described,

means for gripping a fastening strip and inserting the end thereof into work, a guide for saidstrip having a strip guiding opening in fixed axial relationito saidinserting means, and means for temporarilyseating said; strip in-the opening in saidguidevat out of cooperative relation to said first mene inserting the end thereofinto work, alcomclass described, means .for gripping a, fastening strip and bined work feeding and strip guiding means, said means having a strip guiding opening into which the'strip normally projects, and intermittently operated means for pressing said strip into engagement with the walls of said opening; I

7. In a machine of .the class described,

means for gripping-a fastening strip and inserting the end thereof into work, and means for guiding the end of said strip during the inserting operation comprising a member having a guiding opening constantly in axial alinement with the fastening strip and into which the strip normally projects and a second, member likewise having a guiding opening, said second member being movable into and out of operative guiding relation to, said strip.

:8. In a machine of the class described, a single means for gripping a fastening strip, inserting the end thereof into work and severing a portion to form a fastening, and means operating .to engage and guide the projecting end of said strip during the insenting operation, said means being movable with said inserting means during a part of its insertingmovement'and movable relatively to said means during the remainder of said inserting movement.

9. In a machine of the class described, means for gripping a fastening strip and inserting the end thereof into work, and a guide for said strip movable lengthwise of the strip into opposed relation thereto and movable transversely to the strip into engagement therewith. v

10. In a machine of the class described, means for gripping a fastening strip and inserting the end thereof into work, and means for guiding the end of said strip during the inserting operationcomprising members shaped to engage and guide opposite sides of the strip, saidmembers being movable together lengthwise of the strip into opposed relation to said strip and being thereafter movable relatively to each other into guiding relation to said strip.

11. In a machine of the class described, means for gripping a fastening strip and inserting the end thereof into work, and means for guiding the strip end during the inserting operation movable lengthwise of said strip into opposed relation thereto before the strip is gripped and movable into engagement with the strip as said strip is gripped.

1 2. In a machine of the class described, means for gripping a fastening strip and inserting the end thereof into work, and means rendered operative by the'gripping movement of said aforementioned means for guiding said strip end during the inserting operation.

' 13. In a machine of the class described,

mechanism for gripping a fastening strip and inserting the end thereof into Work, and means for guiding the end of said strip dur ing the inserting operation movable into and out of engagement with said strip and brought into operation by the gripping movement of said gripping mechanism.

14. In a machine of the class described, means for gripping a fastening strip and inserting the end thereof into work, and means rendered operative by the gripping movement of said aforementioned means for guiding said strip end during the inserting'operation, said means comprising a member normally in guiding relation to strip and a member movable into and out .of cooperative relation to said first mentioned member.

15. In a machine of the class described, reciprocating cutters arranged to grip a fastening strip, to insert the end thereof into work and then to sever the strip at the point'where gripped to form a fastening, and means for guiding the end of said strip during the inserting operation controlled in its operation by'tl'ie grip'ping and severing action of said cutters.

16. In a machine of the class described, a reciprocating head, means carried by said head for gripping a fastening strip and inserting the end thereof into work, and intermittently operated means also carried by, said head and acting upon said strip across the line of the gripping movement of said gripping means for guiding the strip end during the inserting operation.

17. In a'machine of the class described, a reciprocating head, means carried by said head for gripping a fastening strip and inserting the end thereof into work, and intermittently operated means for guiding the end ofthe strip during the inserting operation also carried by said head and acting upon said strip across the line of the gripping movement of said gripping means, sai' guiding means being movable relatively to said head along the strip.

18. In a machine of the class described, a reciprocating head, means carried by said head for gripping a fastening strip and inserting the end thereof into work, and intermittently operated means also carried by said head for guiding the strip end during the inserting operation, said means being constructed and arranged to exert a centering action upon said strip along two di mensions.

19. In a machine of the class described, a reciprocating head, means carried by said headfor gripping a fastening strip and inserting the end. thereof into work, and means for gindlng the end of the strip during the inserting operation carried by said head and movable into and out of guiding relation to said strip. 1 I v 20. In a machine of the class described,

' a reciprocatinghead, means carried by said head for gripping a1 fastening strip and inserting the end thereof into worlnand means for guiding the strip end during the inserting operation pivoted upon I said head, yieldingly pressed toward said strip and controlled in its operation by said gripping means.

21. In a machine of the class described, a reciprocating head, means carried by said head for gripping a fastening strip and inserting the end thereof into work, means also carried by said head and movable into and out of engagement with. said strip for guiding the end of the strip during the inserting operation, and means cooperating with said gripping means for controlling the operation of said guiding means.

22. In a machine of the class described, a reciprocating head, means carried by said head for gripping a fastening strip and in serting the end thereof into work, and means also carried by said head for guiding the end ofthe strip during the inserting operation comprising a memberhaving a guide opening constantly in alinement with said strip, and intermittently operated means for pressing the strip into engagement with the Wall of said opening.

23. In a machine of the class described, a reciprocating head, a pair of cutters pivoted upon said head and operating to grip a fastening strip and; insertthe end thereof into work, and a guide for guiding the end of said strip during the inserting operation also pivotally mounted upon said head.

24. In a machine of the class described, a reciprocating head, a pair of cutters pivoted upon said head and operating to grip a fastening strip and-insert the end thereof into work, and means for guiding the strip end during the inserting operation pivoted upon said head to turn about an axis at right anglesto the cutter axes.

25. In a machine of the class described, a reciprocatinghead, means carried by said head for gripping a fastening strip and inserting the end'thereof into work, and means also carried by said head for guiding said strip end during the inserting operation, said means comprisinga member pivoted upon said head and amember infixed axial relation to said head. a v I I I 26. In a machineof the class described, a reciprocating head, means carried by said head for gripping a fastening strip and in serting the end thereof into work, and means alsocarried by said headxfor guiding said strip end during the inserting operation, said means comprising a member pivoted upon said head and a member in fixed axial relation to said head, said members being movable togetherupon said head along the axis of said strip.

27. In a machine of the class described, a I

measured distance from its end, partially" inserting that portion of the strip below the point where it is severing the strip at said polnt to form a partially inserted fastening, means for feedmg the work by engagement with the partially inserted fastening comprising a member. having a guiding opening through which the strip passes during the inserting opera tlOIl, and means for pressing the strip into engagement with the walls of said opening arranged to be moved out of operative p0si-.

tion before the work feeding operation gripped and then whereby the work may be turned freely about an axis outside of the strip.

29. In a machine of the. class described, means for grlppmg a fastening strip, partially inserting the portion of the strip beyond the point where it is gripped and severing saidportion from the strip to form a partially inserted. fastening, means for feeding the work operated by engagement with, the partially inserted fastening andjj comprising a member having a notch or groove through which the strip passes duringpthe inserting operation, said notch or groove opening toward the front of the machine, and means for pressing the strip into engagement with the walls of said notch or groove to cause the fastening to be guided duringjthe lnsertlng operation arranged to bemoved out of operatlve position before the work feeding operation whereby the workmay be fed freely along a curved path having its center of curvature in front of the machine. I

30. In a machine of the class described,

means for gripping a fastening strip and in- I serting the end thereof into work, and means acting automatically to maintain a substantially constant frictional resistance to the gripping action of said gripping means to preventlost motion due to wear or lack of properadjustment. I

31. Ina machine of the class described, a pair of reciprocating cutters arranged to grip an interposed fastening strlp, insert the end thereof into work and then sever said strip at the point where gripped, operating means for said cuttersconstructed to cause the cutters to be operated positively when performing each ofthe aforementioned' steps, and spring operated means for cutters to prevent irregular operation such-1 interposing a substantially constant fric name to this specificatibn in the presence of tional resistance to the operation of said two subscribing Witnesses.

LOUIS A. GASGRAIN. Witnesses: H. DORsEY SPENCER,

ELMER B. GRUSH.

as may be caused by inertia or lost motion as the parts become Worn. 7 In testlmony whereof I have signed my Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents,

Washingtpnfl). C.

Correction in Letters Patent No. 1,1 15,5

It is hereby certified that in Letters Patent No. 1,115,504, granted November 3, 1914, upon the application of Louis A. Casgrain, of Beverly, Massachusetts, for

Machines for Inserting Fastenings,

an improvement in an error appears in the printed specification requiring correction as follows: Page 6, line 79, after the Word Patent Office.

Signed and sealed this 2nd day of February, A. D., 1915.

[SEAL] R. F. WHITEHEAD,

Acting Commissioner of Patents. 

